Ranger Sgt. 1st Class out of Fort Benning, Mike Ferguson takes a look through the scoop of a bullpup style sniper rifle. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Elvis impersonators walk past a large banner for Arsenal Firearms in the lobby of the convention center. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

A convention attendee handles a Sig Sauer P220 .45 caliber semiautomatic pistol at the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The National Shooting Sports Foundation was focusing its trade show on products and services new to what it calls a $4.1 billion industry, with a nod to a raging national debate over assault weapons.

Conventioners browse through the booth of military performance gear maker Crye Percision of Brooklyn, NY. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

Conventioners browse through the booth of military performance gear...

Conventioners browse through the booth of military performance gear... Photo-4037185.55194 - SFGate

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Will Michaels of Homer, La., examines a Bushmaster M4 A3 Carbine 300 AAC Blackout rifle at the Bushmaster exhibit during the Shooting Hunting Outdoor Tradeshow, Tuesday, Jan. 15, 2013, in Las Vegas. Michaels, who owns a sporting goods store, said while his gun sales focus primarily on bolt action hunting rifles, he and his clients have taken an interest in assault rifles over the last five years because of an expanding wild hog problem in his region. The National Shooting Sports Foundation was focusing its 35th annual SHOT Show on products and services new to what it calls a $4.1 billion industry, with a nod to a raging national debate over assault weapons.

Will Michaels of Homer, La., examines a Bushmaster M4 A3 Carbine 300 AAC Blackout rifle at the Bushmaster exhibit during the Shooting Hunting Outdoor Tradeshow, Tuesday, Jan. 15, 2013, in Las Vegas. Michaels, who owns a sporting goods store, said while his gun sales focus primarily on bolt action hunting rifles, he and his clients have taken an interest in assault rifles over the last five years because of an expanding wild hog problem in his region. The National Shooting Sports Foundation was focusing its 35th annual SHOT Show on products and services new to what it calls a $4.1 billion industry, with a nod to a raging national debate over assault weapons.

A box of 9mm bullets sits on display at the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The National Shooting Sports Foundation was focusing its trade show on products and services new to what it calls a $4.1 billion industry, with a nod to a raging national debate over assault weapons.

Accessories manufacturer Kevin Kao, of Irvine, Calif., examines a military grade Remington ACR Special Purpose Rifle at the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The National Shooting Sports Foundation was focusing its 35th annual SHOT Show on products and services new to what it calls a $4.1 billion industry, with a nod to a raging national debate over assault weapons.

Accessories manufacturer Kevin Kao, of Irvine, Calif., examines a military grade Remington Adaptive Combat Rifle at the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The National Shooting Sports Foundation was focusing its 35th annual SHOT Show on products and services new to what it calls a $4.1 billion industry, with a nod to a raging national debate over assault weapons.

A convention attendee looks through a Sig Sauer display case of various guns including a P938 Nightmare 9mm semiautomatic pistol at the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The National Shooting Sports Foundation was focusing its trade show on products and services new to what it calls a $4.1 billion industry, with a nod to a raging national debate over assault weapons. (AP Photo/Julie Jacobson)

Stuart Konicar of Scottsdale, Ariz., looks down the sight of a Remington Adaptive Combat Rifle on display at the Remington Defense exhibit during the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The rifle, not available for commercial sale, was on display for industry professionals at the trade show which is put on by the National Shooting Sports Foundation.

Advertising for military small arms producer Daniel Defense is seen in the form of coffee cups available to attendees. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

Advertising for military small arms producer Daniel Defense is seen...

Advertising for military small arms producer Daniel Defense is seen... Photo-4036813.55194 - SFGate

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Remington rifle cartridges are displayed at the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The National Shooting Sports Foundation was focusing its trade show on products and services new to what it calls a $4.1 billion industry, with a nod to a raging national debate over assault weapons.

Mike Hengstebeck of SRT Supply demonstrates the L.A.D. or Lock-Down and Defense ballistic shield unit developed for classroom defense against shootings. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

Mike Hengstebeck of SRT Supply demonstrates the L.A.D. or Lock-Down...

Stuart Konicar of Scottsdale, Ariz., looks down the sight of a Remington Adaptive Combat Rifle on display at the Remington Defense exhibit during the 35th annual SHOT Show, Tuesday, Jan. 15, 2013, in Las Vegas. The rifle, not available for commercial sale, was on display for industry professionals at the trade show which is put on by the National Shooting Sports Foundation.

Winner of the latest installment of the History Channel's sport shooting program "Top Shot", Chris Cheng of San Francisco poses for a portrait while attending the convention. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

Winner of the latest installment of the History Channel's sport...

Winner of the latest installment of the History Channel's... Photo-4036518.55194 - SFGate

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Co-owner Gregg Thompson of Crye Percision, makers of military apparel and gear, poses for a portrait at his company's booth. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Attendees are seen in front of a large banner advertisement for Arsenal Firearms in the lobby of the convention center. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

Attendees are seen in front of a large banner advertisement for...

Attendees are seen in front of a large banner advertisement for... Photo-4036523.55194 - SFGate

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A display of various weapons is seen at the booth of CMMG Small Arms Manufacturing. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

A display of various weapons is seen at the booth of CMMG Small...

A display of various weapons is seen at the booth of CMMG Small... Photo-4036528.55194 - SFGate

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Gun show attendees walk past a large banner for Arsenal Firearms in the lobby of the convention center. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

Gun show attendees walk past a large banner for Arsenal Firearms in...

SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

SHOT Show, the world's largest gun show, opened at the Sands...

SHOT Show, the world's largest gun show, opened at the Sands... Photo-4036618.55194 - SFGate

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SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

SHOT Show, the world's largest gun show, opened at the Sands...

SHOT Show, the world's largest gun show, opened at the Sands... Photo-4036619.55194 - SFGate

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Empty bullet casings are seen in a display at the Crye Precision booth. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

Empty bullet casings are seen in a display at the Crye Precision...

Empty bullet casings are seen in a display at the Crye Precision... Photo-4036526.55194 - SFGate

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Gun show attendees walk past a large banner for Arsenal Firearms in the lobby of the convention center. SHOT Show, the world's largest gun show, opened at the Sands Convention Center in Las Vegas, NV on Tuesday January 15th, 2013, where an estimated 60,000 industry enthusiasts are expected to attend.

Photo: Michael Short, Special To The Chronicle

Gun show attendees walk past a large banner for Arsenal Firearms in...